FIELD
GUIDES.
Useful explanations about the optics and detectors behind the marketing. Original writing with linked primary references.
Reference / Oct 2026256 vs 384 vs 640: reading thermal resolution correctly
A higher sensor pixel count is useful, but it is only one part of an imaging system.
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Reference / Oct 2026NETD explained: why a smaller mK number can matter
Thermal sensitivity is not the same specification as thermal resolution.
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Reference / Oct 2026Field of view vs. magnification: the tradeoff that matters
Why a lens and sensor pairing deserve more attention than a large zoom number.
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Reference / Oct 2026Thermal imaging vs. night vision: what each actually sees
Understanding emitted heat signatures versus amplified or digitized visible and near-IR light.
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Reference / Oct 2026How fog, rain and humidity affect thermal images
Why the idea that thermal always sees through bad weather is misleading.
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Reference / Oct 2026Thermal model numbers decoded: what the name does and does not tell you
An honest guide to reading 25-384, LRF and 50-640 without pretending names are full spec sheets.
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Reference / Oct 2026Evaluating a used thermal device: condition and documentation
A practical checklist for secondhand electronics with expensive sensors and optics.
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Reference / Oct 2026Refresh rate, recording and connectivity in thermal optics
Separating the sensor's update rate from recorded video, screens and apps.
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Reference / Oct 2026What LRF means on a thermal optic
Rangefinding is a distinct subsystem, not automatically a better thermal detector.
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Reference / Oct 2026The first thermal comparison checklist
A worksheet for separating objective facts from attractive marketing claims.
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